Originally Posted by
joncat24
to answer the other question about the t-5's. t5's are supposed to be better than pc's, but at the wattage you stated, I doubt that they would be. Also the bulbs do last longer but you hva eto replace 6-8 bulbs instead of 2 so I doubt that there is alot of savings. And, in my humble opinion....t5's are no match whatsoever against mh's. The thing about metal halides is the heat, so just make sure to get a couple of fans blowing across the top of the tank and you will be fine.
Hey Joncat - I was about to purchase a 4x65w retrofit T-5 for my 55 gal. After reading your posts, I'm starting to think about changing things up. What would you say about getting 2x65w T-5 instead of 4 and then adding a MH retro kit.
Question 1: If I did this, which retro kit would you get from hellolights? They have 175 and 250W HL MH (single ended) for $125 and $129 respectively, and they have 150 and 250W HL (HQI) for $125 and $135.
I would thus have 2 T-5's and 1 MH.
Question 2: My only concerns with this is - I would have to add a fan to lower heat - are the fans loud? And I had planned onclosing the T-5's to shield them from water - the MH's cannot be enclosed, correct? Thus I would have to have a good cover b/w the tank and MH's?
Thanks